I just got a Philips monitor driver pack (I got it as a pack of Win '95 drivers, but they most probably work on NT Windowses as well - I couldn't test) and I added the 7CM5209 /20T since I had the info I needed to do it. You are advised to use WiziWYG (it's free) to create your own colour profile for the 7CM5209.
When installing the 7CM5209 under Windows 98 (and probably all others), note that the refresh rate must be set to "optimal" and NOT "adapter default". When I tested, 1024 was unusable until I changed to "optimal". The other resolutions were too dark before that. Also, note that this monitor can only display 1024x768 in interlaced mode, and that it is a fixed frequency monitor, meaning there is only one possible frequency per resolution.